Asked by adithya

a negative charge 5.0 X 10^-4 C exerts a repulstio force of 7.0 N .on second charge away 0.05 m away.
what is the sign and magnitude of the second charge

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Answered by adithya
find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^-19 coulomb
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